Frick Rotary Screw Compressor RWF II 546

Performing a few preventive maintenance procedures will extend the life of your pump and reduce the cost per gallon pumped.

Packing adjustment - Occasional packing adjustment may be required to keep leakage to a slight weep; if impossible to reduce leakage by gentle tightening, replace packing or use different type.

End clearance adjustment - After long service the running clearance between the end of the rotor teeth and the head may have increased through wear to the point where the pump is losing capacity or pressure. Resetting end clearance will normally improve pump performance.

Sign off on the preventative maintenance

WARNING: Do not mix oils of different brands, manufacturers, or types. Mixing of oils may cause excessive oil foaming, nuisance oil level cutouts, oil pressure loss, gas or oil leakage and catastrophic compressor failure.

NOTICE: The Frick oil charge shipped with the unit is the best suited lubricant for the conditions specified at the time of purchase. If there is any doubt due to the refrigerant, operating pressures, or temperatures, refer to Frick Oil publication 160.802-SPC for guidance. Only use Frick oil filter elements or warranty claim may be denied.

Participate in a regular, periodic oil analysis program to maintain oil and system integrity. Oil analysis kit part number: 333Q0001853.

Oil samples for analysis should be taken after the oil filter. A 1/4 in. purge valve is provided in the oil filter canister head.

WARNING: Exercise extreme caution in the vicinity of operating equipment. Skin contact with lube oil or inhalation of vapors can cause serious injury or death, consider gloves and eye protection.

Sample hot, active fluid while the equipment is operating. Sample after 30 min of compressor operation.

Unthread the oil sampling valve cap and locknut.

Warning: For trained personnel only

The volume ratio control transmitter is located on the right side of the compressor (facing the shaft) at the inlet end.

The linear transmitter with hermetic enclosure is based on the inductive measuring principle. It features removable electronics (from the sensor well) eliminating the need to evacuate the compressor for replacement.

This type of transmitter is dedicated to volume ratio control and has no user adjustments.

DIN connector plug removed from transmitter

When changing the coalescer filter element(s) it is recommended that the oil be changed, cartridge(s) in oil filters OF-1 and OF-2 if applicable be changed and the following applicable strainer elements be removed and cleaned.

Use of filter elements other than Frick may cause warranty claim to be denied.

1. See Changing oil, Steps 1 through 8.

2. Loosen manway cover retainer bolts, remove retainers, manway cover and cover gasket. Discard cover gasket.

3. Remove and retain nut securing coalescer filter retainer.

4. Remove retainer, coalescer filter element and 2 O-rings. Discard filter elements.' 5. Install new coalescer filter element(s).

WARNING: Be extremely careful not to loosen thermowell while attempting to remove the temperature sensor. The use of two wrenches will be necessary to ensure the thermowell remains stationary. Loss of oil and/or refrigerant could occur. Exposure to refrigerant fumes and/or hot oil can cause injury or death.

Upload a photo of the DIN connector plug removed from transmitter

Upload a photo of the new sensor assembly applied with thermal compound

New sensor assembly inserted into thermal well and knurled ring tightened

Upload a photo of the DIN connector plug applied to transmitter

NOTICE: The temperature sensor is factory set. If calibration is required, refer to Calibration Instructions in publication 090.040-O for service technicians.